after的用法

　　after有以后;后來(lái)等意思，那么你知道after的用法嗎?下面跟著學(xué)習(xí)啦小編一起來(lái)學(xué)習(xí)一下，希望對(duì)大家的學(xué)習(xí)有所幫助!

　　after的用法：

　　注意after和in的使用：從某時(shí)說(shuō)到多少時(shí)間以后，不用after，而用in。如果指“某個(gè)時(shí)刻，日期或事件以后”，用after。

　　He will/would arrive in four weeks.

　　表達(dá)“某事件的若干時(shí)間以后”時(shí)，應(yīng)是“若干時(shí)間after事件”，而不是“after若干時(shí)間of事件”。可說(shuō)two hours after his arrival，不可說(shuō)after two hours of his arrival。在“two hours after his arrival”前加不同的介詞，有不同的意思:“two hours after his arrival”單用時(shí)指“他到達(dá)兩小時(shí)以后”。若前面加the，如the two hours after his arrival指“他到達(dá)以后的兩小時(shí)”，加for指“在他到達(dá)以后的兩小時(shí)全段時(shí)間里”，加in 跟沒(méi)有in意思相同，加within指“在他到達(dá)以后的兩小時(shí)中的某時(shí)刻”;

　　指“若干時(shí)間after日期或月份”時(shí)，常把當(dāng)天的日期或當(dāng)月除外。如five days after 3 July，指從7月4日算起的5天以后，也就是7月9日。但有例外，five days after I July可能指7月8日，months after July可能指11月，注意避免這種結(jié)構(gòu)產(chǎn)生誤解;

　　指“從過(guò)去的某時(shí)或某事說(shuō)到現(xiàn)在”時(shí)，不用after，用since，所以可說(shuō)Since his graduation he has been abroad.(since不可改成after)一定要改的話(huà)，可表示為After his graduation he went abroad. 這里的after是介詞，用作連接詞時(shí)用法一樣。

　　He went abroad after he graduated.

　　不可說(shuō) He has been abroad after he graduated.

　　half after four，five minutes after eight等是美國(guó)英語(yǔ)，相當(dāng)于英國(guó)英語(yǔ)half past four，five minutes past eight等，英國(guó)方言中也有half after four等表達(dá)方式;

　　after引導(dǎo)的狀語(yǔ)從句，用現(xiàn)在時(shí)態(tài)，不用將來(lái)時(shí)態(tài)。

　　I shall start after he comes.

　　after常指時(shí)間先后的次序，而behind常指位置，如August comes after July，用after,，而A garden lies behind the house，用behind。不過(guò)有時(shí)after和behind可以通用。

　　Please shut the door after/behind you.

　　He came in after/behind her.

　　be after指“追求，要求”，

　　He is after you.

　　他正在追求你。

　　He is always after me to teach him the violin.

　　他老是要我教他小提琴。

　　after all有時(shí)指“雖然這樣”，

　　In coming home we got caught in the rain and became wet through and through, after all I don't mind as we had a fine time.

　　不可說(shuō)be after doing …，這里不是指想要做什么，或是將要做什么，而是已經(jīng)做了什么。但是可以用after doing…的結(jié)構(gòu)。

　　After completing this form, give it to the secretary.

　　after作為副詞時(shí)，通常不單用，而是以其他形式出現(xiàn)，如afterwards，then或afterthat。

　　I'm going to do my exams, and afterwards I'm going to study medicine.

　　after英語(yǔ)例句：

　　1. No matter where you go in life or how old you get, there's always something new to learn about. After all, life is full of surprises.

　　不管你生活在哪里，你有多少歲，總有新東西要學(xué)習(xí)，畢竟，生活總是充滿(mǎn)驚喜。

　　2. He was fired from his job after roughing up a colleague.

　　他因?yàn)閷?duì)一位同事動(dòng)粗而被開(kāi)除了。

　　3. The mystery hero imme-diately alerted police after spotting a bomb.

　　那個(gè)無(wú)名英雄發(fā)現(xiàn)炸彈后馬上報(bào)了警。

　　4. After a three-weekend courtship, Pamela accepted Randolph's proposal of marriage.

　　經(jīng)過(guò)3個(gè)周末的追求之后，帕梅拉接受了倫道夫的求婚。

　　5. The ballot was re-run on Mr Todd's insistence after accusations of malpractice.

　　因被控舞弊，在托德先生的堅(jiān)持下重新進(jìn)行了投票。

　　6. He does deserve some good luck after so much wretchedness.

　　經(jīng)過(guò)這么多苦難之后，他應(yīng)該行點(diǎn)好運(yùn)了。

　　7. After sixteen years of marriage they have grown bored with each other.

　　結(jié)婚16年后，他們已經(jīng)漸漸彼此厭倦了。

　　8. After years of neglect and decline the city was cleaning itself up.

　　多年的玩忽職守和經(jīng)濟(jì)蕭條過(guò)后，這個(gè)城市在進(jìn)行自我整頓。

　　9. After his elevation to the papacy, he reigned for two years.

　　他升任教皇后在位兩年。

　　10. She dropped out after 20 kilometres with stomach trouble.

　　20公里后她因胃痛而退出了比賽。

　　11. They were spotted after three hours adrift in a dinghy.

　　他們?cè)谛◆迳掀×?個(gè)小時(shí)后才被發(fā)現(xiàn)。

　　12. These chaps know their stuff after seven years of war.

　　7年的戰(zhàn)爭(zhēng)過(guò)后，這些家伙都成了作戰(zhàn)行家。

　　13. After the pain of defeat passes, England have some thinking to do.

　　失敗的痛苦過(guò)去以后，英國(guó)人應(yīng)該認(rèn)真反思一下。

　　14. Hopefully, you won't have any problems after reading this.

　　希望你讀完這個(gè)后就不會(huì)有任何問(wèn)題了。

　　15. She travelled to India after taking her A levels.

　　她參加完高等程度考試后去印度旅行了。